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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Page crash when you use use css custom properties with '%' inside a calc()"
href="https://bugs.webkit.org/show_bug.cgi?id=165034">165034</a>
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<th>Summary</th>
<td>Page crash when you use use css custom properties with '%' inside a calc()
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Safari 10
</td>
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<th>Hardware</th>
<td>Macintosh
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<th>OS</th>
<td>macOS 10.12
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Blocker
</td>
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>CSS
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>matteowebdesigner@googlemail.com
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<pre>Created <span class=""><a href="attachment.cgi?id=295339" name="attach_295339" title="Error you see">attachment 295339</a> <a href="attachment.cgi?id=295339&action=edit" title="Error you see">[details]</a></span>
Error you see
Issue found on:
- iPhone 5 Safari 9
- MacOs 10.12.1 Safari 9/10
to replicate the issue create an html page and add this: <div style="--size:%;width:calc(var(--size));"></div>
The page will crash and report an error.</pre>
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